Portable milker



A. LTERPENING PORTABLE MILKEB Sept. 20, 1949.

2 Sheets-Sheet 1 Filed April 10, 1947 //v v/v TOR mmo 1. TERPENl/VG P 1949- I A. l/TERPENING 2,482,602

PORTABLE MILKER Filed April 10, 1947 //v VENTOI? AR/VOL D I. TERPENING WW- J ATTORN Y5 2 Sheets-Sheet 2 Patented Sept. 20, 1949 to- The De Laval Separator Company,

New

York; N. Y a corporation of New Jersey 7 Application April '10-, 1947, Serial No. 740,620

son'ims. (c1. zen-33) This invention relates to milking machines and more particularly to a portable mi-lkcr of novel construction wherein a handle, which is used in moving the miiker from one location to another,

also serves as an integral part of the milking. system.

Portable miikers as made heretofore comprise a movable base on which a motor is mounted, and a vacuum pump also mounted on the base and driven by the motor; The miiker unit, in eluding the can, the pneumatic 'pulsator and the teat cups, can be transported on the base and has a: comrection be the inlet side or the pump,

enerally through a fl xible nose-leading the base, y

it is an objector the present lnventlontc rovide a simplified port-able m iiker construction which may be handled with greater facility than has been possible heretofore One feature of the invention resides in the provision or a portable miiker having a h llow handle su porting astaii cook or other device by which the interior or the handle may be connected to a flexible hbseof the milkcr unit, the interior of the handle also communicating through a duct to the inlet smear t e vacuum puff-1b. I

Another reamre resides in a portable milker or the character described, wherein the duct leading from the interior or the handle to the inlet side of the pump is terraced in a hollow base suportingtne pump and the motor;

Thcse'and ctner'ieatures or the invention may be better understood" hy'relerence tothe accom panying drawings, in'whitlh:

Fig. l is a'perspective view of one portable-miter;

Fig. 2 is a sectional view of the vacuum pump, showing the pump inlet and outlet and also a passage for supplying oil to the pump;

Fig. 3' is a perspective View of one end of the hollow'base for Supporting the motor and pump;

Rig. '4 is a vertical sectional View of the hollow base;

mg, 5 is a perspective with the coverirem'oved;

Fig. 6- is a perspective view'of the cover for the basal Fig. 7 ice perspective view of a modified form of theportable milker, and

Fig} 8 is a perspective view of part of the milker illustrated in '7, showing the connection be tween the hollow handle and the pump.

y-Referringt'o 1 through b inclusive, the portable-milker comprisesa. hollow base who'vview of the hollow base;

mg. wheels H mounted on an axle l2 secured to the base. The baseis is of a box-like construction having a rectangular bottom and opposing side and end walls, each of which may be a metal plate welded or otherwise connected to threadjoining plates to form an air-tight structure. The

top of the box is closed by a movable cover l3 which is secured in position in any suitable manner, a; gasket Eta being preferably interposed be tween the cover and the side walls to make the.

base airtight.

Mounted on top of the cover I3 is a motor M, which may be an electric motor energized through a flexible cable 15. A vacuum pump I5 isalso mounted on top of the cover 13 and is driven from the motor by a belt H. The vacuum pump l6 (Fig. 2) is of the type in which the inlet 15a and the outlet lfib are located at the bottom of the pump housing, a pump of this type being disclosed in a co-pendin'g application of C. H. Harrgoo'd, Serial No. 597,074, filed June, l, 1945. The pump housing has a generally vertical pipe I extending downward from the vicinity of the bearing at one end. of the rotor shaft Hid, and a tube we extends from the lower end of the oil pipe [Seth-rough an opening 13c in the cover [3, as will be described in detail presently. a

Within the hollow base ill is a vertical, longitudinal partition Isa parallel to the side walls. A generally" horizontal partition I 3b extends from the partition 8a to the more remote of the two side Walls. The partition Hibis located inter mediate the top and bottom of the base and is connected at one'en-d to one of the end walls of the base. At its other end, the partition Mb terminates short of the opposite end Wall of the base and joins a vertical partition lllc extending to the top of the base, the ends of the partition lilo joining the vertical. partition Ella and the side wall to which the partition lib is connected.

The vertical partitions I90, and We are provided at the top with extensions of the gasket !3a,. Also, the metal-to-metal joints at the edges of the partitions are made air-tight.

The vertical partitions Illa, and lllc and the partition Illb partly define a chamber I061 which serves as an oil reservoir, the bottom IOb of which is slightly inclined so that the oil will tend to drain down toward an opening we in the adjacent end wall. The oil tube Hie extends down into the oil reservoir [9d through the cover opening l3e, while the outlet [6b of the pump leads. down into the oil reservoir through opening 134 in the cover. v v

The generally horizontal partition lob divides the oil reservoir IOd from a chamber I) in the lower part of the base. The latter chamber serves as a sani-trap, as will be described in greater detail presently, and communicates with the pump inlet liia through opening I30 in the cover.

The vertical partition Illa forms one wall of a chamber IIig located on the opposite side of this partition from chambers Hid and Iflf. The chamber lflg serves as an exhaust or mufller and communicates with the oil reservoir Illd through an elbow [31) on the cover l3. Air in the mufller lllg is exhausted from the base through a downwardly directed pipe IIlh.

The opening Hie from the oil reservoir I 011 leads to an oil gauge I9 having at its upper end a removable cap I9a provided with a stem I 92) extending down into the interior of the gauge,

whereby the oil level in the reservoir may be readily determined by removing the cap. Also, by removing the cap l9a', the supply of oil in the reservoir Ifld may be replenished through the gauge. A removable cap I9c is mounted on the lower end of the gauge, and by removing this cap the'oil may be drained from the reservoir.

A vacuum regulator 22, which may be of any conventional form, is mounted on the cover I 3 and communicates with the sani-trap IIif through an opening I3f in the cover. The regulator 20 operates automatically to admit air through cover opening I31, if the sub-atmospheric pressure in the sani-trap It) should become too low due to withdrawal of air by the vacuum pump through cover opening I30.

A handle 22 is connected to the base In and is used by the operator in moving the portable milker from one location to another. The handle 22 is hollow and is preferably made from metal piping. As shown, the handle is U-shaped and is connected at its ends to the base, one end being connected through an elbow 23 which is welded or otherwise secured over an opening 02 in one side wall of the base. The opening I01 leads into the sani-trap Iilf above the bottom level thereof and communicates with the inlet Ifia of the pump through the cover opening I30. The other end (not shown) of the handle 22 is connected to the opposite side wall or" the base but is closed from the interior of the base.

A connecting device in the form of a stall cock 24 is mounted on the transverse portion of the handle 22 so as to communicate with the interior of the handle, the device 22 being preferably of the type disclosed in Scott Patent No. 2,251,071 dated July 29, 1941. The flexible hose 25 of the milker unit, when applied to the nipple 24a of the stall cock, is connected to the pump inlet IBa through handle 22, sani-trap It! and cover opening 130, whereby the milker unit is vacuum operated in the usual manner.

A platform 28 is hinged to the legs of the handle 22, the free end 26a of the platform being curved downwardly so that when the free-end is lowered it will rest upon the cover I3 of the base. In its lowered position, the platform 26 serves as a support for the milker unit. A leg 2's is secured to the bottom of the base It] at the end thereof adjacent the handle 22 and serves to support the base when it is stationary. The handle 22 may be provided with a hook 28 for holding a strip cup 29.

In operation, air withdrawn from the milker unit through stall cock 24 passes down through the hollow handle 22 and the elbow 23 into the sani-trap Iflf, ,where dust, and other particles in'the air will settle to the bottom. The air will then flow up through cover opening I3c to the pump inlet I to, the compressed air being exhausted from the pump through outlet I6b from which it flows down through cover opening I3d into the oil reservoir ltd. There, a separation of oil from the air occurs, the air then passing through eblow lib into the mufiler lOg from which it is exhausted through pipe Iflh. During operation of thepump l5, its rotor assembly is constantly supplied with oil from tube I6e, the lower end of which is below the oil level in reservoir I M. Since the pressure in the rotor chamber at theupper end of pipe liic is lower than that in the reservoir chamber ltd, oil will be forced up through tube Ifie and pipe [to to the rotor chamber where it serves as a lubricating and sealing medium, .the oil returning to the reservoir through pump outlet I 62).

Because of the hollow handle 22 and its air inlet and outlet connections 22 and 23, respectively, I have provided a portable milker of simplified construction. By locating the stall cock 24 at the upper part of the handle, the hose 01! the milker unit may be easily maintained well above the floor, at all times, which is advantageous in the use of the machine. Moreover, by making the handle 22 an integral part of the milking system, the milker unit may be, used at a greater distance from the vacuum pump, with- 5 out requiring an additional length of hose or other special connection from the region of the pump.

It is to be understood that the construction of the hollow base I 0 itself forms no part of my invention, the base construction being disclosed and claimed in a co-pending application of D. F. Ayres, Ser. No. 740,529, filed April 10, 1947.

In the modified form of the portable milker i1- lustrated in Figs. 7 and 8, the base comprises a pair of longitudinal members Bil which may be made of angle iron and are supported in spaced relation on the axle l 2 for the wheels II. A horizontal plate 3| is mounted on top of the members 32 at the front part of the base and supports the motor I4. The pump I6 is supported on a rear plate 32 at a lower level than the plate 3|. At its sides, the plate 32 has outwardly extending flanges 32a resting upon the longitudinal members 30. As best shown in Fig. 8, the rotor housing of pump I6 is mounted on a hollow base 33 on the plate 32, the air inlet to the pump being through a pipe 33a connected to a hollow boss on the base 33, and the air outlet from the pump being through a pipe 33?; connected to a second hollow boss on the pump base.

Connected to the rear end of one of the longitudinal members is a hollow casting 34, which serves as a leg for supporting the base structure when it is stationary. The casting 34 has a longitudinal passage 34a communicating with one end of the hollow handle 22 connected to the casting. Below this end of the handle, the passage 34a communicates with the pump inlet through a flexible tube 35 connected at one end to a nipple on the casting and at the other end to the inlet pipe 33a. A vacuum regulator 20a is connected to the inlet pipe 3311 through a pipe 36 to prevent the sub-atmospheric pressure in the vacuumline, including handle 22, from becoming too low.

The opposite end of handle 22 is connected to the other longitudinal member 30, as by means of a leg casting (not shown), it being understood that the latter end of the handle is closed.

The pump and motor may be enclosed in aremovable cover (not shown) having depending 5 a 7 side walls adapted to rest upon the base assembly, 30, 3|, 32. The top of such a cover may be used to support the milker unit 38 when moving the machine from one location to another.

Operation of the milker shown in Figs. 7 and 8 is similar to that of the form first described, except that air withdrawn from the milker unit 38 through hose 25, stall cook 24 and handle 22, flows to the pump inlet through the tube 35 which is outside the base, thefsani-trap being eliminated. Also, while the pump base 33 is provided with an oil reservoir through which the air from the rotor housing is discharged to the exhaust pipe 332), the separate muiiler chamber [0g is eliminated.

I claim:

1. In a portable milker having a movable base and a vacuum pump mounted on the base, the pump having an inlet and an outlet, the combination of a hollow handle connected to the base for use in moving the same from one location to another; a duct leading from the handle to the pump inlet and through which said inlet communicates with the interior of the handle, and a hollow connecting device mounted on a part of the handle remote from the ductand communieating with the interior of the handle, said device being adapted for connection with a milker unit.

2. A combination as defined in claim 1, in which said base is hollow and forms the duct through which the pump inlet communicates with the interior of the handle.

3. A combination as defined in claim 1, in which said base is hollow and forms the duct through which the pump inlet communicates with the interior of the handle, the base having an opening in one wall, one end of the handle being connected to said wall around the opening and communicating with said duct through the opening 4. A combination as defined in claim 1, in which said duct is a pipe located exteriorly of the base.

5. A combination as defined in claim 1, in which the hollow handle is generally U-shaped and is connected at its opposite ends to the base, the hollow connecting device being mounted on the transverse portion of the handle, and said duct being connected to the handle at one end portion thereof.

ARNOLD I. TERPENING.

No references cited. 

